Corneal surgery risk evaluation method and system thereof

a risk evaluation and corneal surgery technology, applied in the field of mechanical evaluation methods and systems, can solve the problems of no more accurate evaluation means for doctors to consult, blurred vision, and blurred vision, and achieve the effect of a more accurate evaluation method

Inactive Publication Date: 2018-05-10
CHEN WEN CHIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012]Compared to the prior art, the present invention can evaluate difference before and after surgery throu...

Problems solved by technology

If the surface of the retina is abnormal or the thickness is uneven, the image will not be focused on the retina so that a blurred vision will occur.
In addition to the above-mentioned problems, there are corneal lesions, ulcers or injury resulting in irregular corneal spherical curvature which leads to blurred vision.
However, before current surgical operation, there is...

Method used

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  • Corneal surgery risk evaluation method and system thereof
  • Corneal surgery risk evaluation method and system thereof
  • Corneal surgery risk evaluation method and system thereof

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Embodiment Construction

[0024]Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a schematic diagram of a multi-layered structure of a cornea 1. The cornea 1 comprises Epithelial Layer 11, Anterior Elastic Lamina / Bowman's Membrane 12, Stroma 13, Posterior Elastic Lamina / Descemet's Membrane 14, and Endothelium Layer 15. In this embodiment, it is mainly to discuss Anterior Elastic Lamina / Bowman's Membrane 12, Stroma 13, and Posterior Elastic Lamina / Descemet's Membrane 14. FIG. 1B a schematic diagram of material parameters of the cornea 1. The material parameters at least comprise radius r, thickness T1, and thickness T2. Wherein the thickness T1 is preferably refer to location near the center of the cornea. The thickness T2 is preferably refer to location near the end of the cornea (i.e. location much closer to sclera 2).

[0025]Please refer to FIG. 2, corneal surgery risk evaluation method in the present embodiment preferably comprises the following steps: (S1) measuring an intraocular pressure (IOP); (S2) input...

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Abstract

This invention provides a corneal surgery risk evaluation method and system thereof. Utilizing a mechanical numerical model to evaluate stress differences before corneal surgery and after, and further providing a suggested surgical path and risk after surgery. The evaluation method, comprising: measuring Intraocular pressure (IOP); inputting geometric parameters and material parameters of multi-layer of corneal; constructing a first corneal numerical model; constructing a second corneal numerical model with at least one cutting path character; evaluating whether the cutting path character should be re-constructed or not.

Description

BACKGROUND OF THE INVENTION1. Field of the Invention[0001]The present invention relates to a mechanic evaluation method and system, especially a corneal surgery risk evaluation method and system thereof after calculating by a numerical model.2. Description of the Prior Art[0002]In general, the process of normal human eye to receive light source and generate an image is that the refractive light source by cornea passes through pupil, and then adjusting the intensity of the light source by pupil dilation or miosis actuated by iris. Then the light source refracts via lens and focuses on the retina to form the image. The image is transmitted to brain through optic nerve. In said process, the spherical curvature of cornea is very important. If the function is normal, the light source can be refracted correctly and focused clearly on the retina. If the surface of the retina is abnormal or the thickness is uneven, the image will not be focused on the retina so that a blurred vision will oc...

Claims

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Application Information

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IPC IPC(8): A61B34/10A61B3/00A61B3/14A61B3/16A61F9/013
CPCA61B34/10A61B3/0025A61B3/14A61B3/16A61F9/013A61B2034/105A61B2034/104A61B2017/320052
Inventor SHIH, WEN-PINCHEN, WEN-CHIN
Owner CHEN WEN CHIN
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